Mine is having significant heating issues, but when its not overheating it's really great. I've never seen so many details as I do with the 108mp sensor. Shooting RAW in pro mode is a great plus. Zoom works well and are very useful in my mind. Digital zoom is very usable up to x30, and more than that is very nice on screen but not for photography. It can be excellent as a binocular replacement. I've seen details on cars traveling the highway about 1km from here (I'm on a high floor). keep in mind you need to have good lighting as the zoom cameras, esp the 10x, are slow (meaning a small aperture, the 10x is f/4.9). The portrait mode works nicely as well. I don't have enough experience with video so would rather not comment.
OMG! I thought I was the only one - i've literally just posted the same concern on a new post. I bough the 21 Ultra 512gb and I compared it to the Note 9 and Iphone Pro 12 max - both of them are far superior in quality. Having watched the Tech Youtubers I was really sold on how amazing the camera will be. If there is no software update to fix this in the next 3 days then I will be returning my phone.